<template>
  <div class="app-container">
    <!-- 查询表单 -->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <!-- placeholder 是输入框中显示的文字 -->
        <el-input v-model="searchObj.name" placeholder="讲师名称"/>
      </el-form-item>

      <el-form-item>
        <el-select v-model="searchObj.level" clearable placeholder="讲师头衔">
          <!-- value前面有冒号，动态绑定 -->
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>

      <el-form-item label="添加时间">
        <el-date-picker
          v-model="searchObj.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"/>
      </el-form-item>

      <el-form-item>
        <el-date-picker
          v-model="searchObj.end"
          type="datetime"
          placeholder="选择截至时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"/>
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="fetchData()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 讲师列表 -->
    <el-table v-loading="listLoading" :data="list" element-loading-text="数据加载中" border fit highlight-current-row>
      <el-table-column label="序号" width="70" align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="name" label="名称" width="80"/>

      <el-table-column label="头衔" width="80">
        <template slot-scope="scope">
          {{ scope.row.level === 1 ? '高级讲师' : '首席讲师' }}
        </template>
      </el-table-column>

      <el-table-column prop="intro" label="资历"/>

      <el-table-column prop="gmtCreate" label="添加时间" width="160"/>

      <el-table-column prop="sort" label="排序" width="60"/>

      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <!-- 路由到另一个界面 -->
          <router-link :to="'/edu/teacher/edit/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">修改</el-button>
          </router-link>
          <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页 -->
    <el-pagination
      :total="total"
      :current-page="page"
      :page-size="limit"
      layout="total, prev, pager, next, jumper"
      style="padding: 30px 0; text-align: center;"
      @current-change="fetchData"/>
  </div>
</template>

<script>
import teacher from '@/api/edu/teacher'

export default {
  data() {
    return {
      listLoading: true,
      list: null,
      total: 0,
      page: 1,
      limit: 10,
      searchObj: {}
    }
  },

  created() {
    this.fetchData()
  },

  methods: {
    fetchData(page = 1) {
      console.log('加载列表')
      this.page = page
      this.listLoading = true
      // console.log(this.searchObj)
      teacher.getPageList(this.page, this.limit, this.searchObj).then(response => {
        if (response.success === true) {
          this.list = response.data.rows
          this.total = response.data.total
        }
        this.listLoading = false
      })
    },

    resetData() {
      this.searchObj = {}
      this.fetchData()
    },

    removeDataById(id) {
      this.$confirm('此操作将永久删除该记录，是否继续？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        return teacher.removeById(id)
      }).then(() => {
        this.fetchData()
        this.$message({
          type: 'success',
          message: '删除成功!'
        })
      }).catch((response) => {
        if (response === 'cancel') {
          this.$message({
            type: 'info',
            message: '已取消删除'
          })
        } else {
          this.$message({
            type: 'error',
            message: '删除失败'
          })
        }
      })
    }
  }
}
</script>
